Improvement in rolling-miliis



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J. MONTGOMERY ROLLING MILL.

No. 86,314. Patented Jan. 26, 1869.

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J. MONTGOMERY.

ROLLING MILL.

No. 86,314. Patented Jan. 26, 1869M mnesses. a 71a. W Z w? wmw ETERS o0, wcrcxu'mo wnsnmavou 0 c 3 Sheets-Sheet; 3.

J. MONTGOMERY.

ROLLING MILL.

No. 86,314. Patented Jan. 26, 1869 strut fire.

JAMES MONTGOMERY, OF CROTON LANDING, NEW YORK.

Letters Patent No. 86,314, dated J amcwry 26, 1869.

DIIPROVEMEI Q'T IN ROLLING-ms.

The Schedule referred to in these Letters Patent and making part of the same.

To all whom it may concern themlby frictional clutching-apparatus, as hereinafter explained.

Second, in an improved construction of couplingshafts for connecting the rolls and their driving-pinionsf Third, in an improved construction and arrangement of hollow mandrels, upon which hollow articles may be rolled, and within'which water may be circulated, to

keep the mandrels cool, as hereinafter described.

Fourth, in improved modes of constructing and supporting the fore and rear plates upon which the blooms or ingots are fed to the rolls.

Fifth, in an arrangement, in connection with a rolling-mill steam-engine, of a hollow piston-rod and crankpin, as hereinafter explained.

In the drawings Figure 1 is a plan or top view of a rolling-mill, illustratlng my invention.

Figure 2 is a front elevation of the same, partly in section.

Figure 3 is a vertical transverse section at z z, figs. 1 and 2.

Figure i-represents a longitudinal section of one of my hollow mandrels.

Figure 5 represents a longitudinal section of one of my hollow mandrels.

Figure 6 represents a' transverse section of the X- formed coupling-shaft, hereinafter described.

A A represent a pair of hollow rolls, mounted in bearings BB, and grooved upon their peripheries, in any suitable manner, according to the form of the article which they may be intended to produce.

By making them hollow, the said rolls would be protected from rapid heating by the circulation of air with-" in them, but, as a complete and permanent protection against heating, I prefer to pass a constant current of water through the rolls.

The water may be introduced at one end of the rolls by a pipe, P, leading from a customary water-trough, T, and discharged at the other end.

The journals of the rolls are likewise hollow, and have their hearings in housings, B B, mounted ingrooves, or

otherwise fitted to slide upon the bed-plate, O, and adjusted and secured by screws, 7) b, for the purpose of setting them in or out, so as to bring the bearings of the rolls accurately in line.

D D are the connecting-pinions of the rolls, the necks or journals,d d, of which are also made hollow, for the object before stated.

The connections between the rolls A A and the driving-necks d d are formed by X-shaped coupling-shafts, E E, fitting corresponding grooves within the journals, as represented in fig. 3.

F F represent friction-clutches, of any suitable form, for communicating motion to the driving-necks from the crank-shafts Gr G of engines H H, which engines are to be keptconstantly running.

The water to supply the rolls may be conducted from a common trough, T, by pipes P P, or in any other suitable manner.

The clutch-levers I I are moved simultaneously by a connecting-rod, J, so that the advancing of one clutch will retract the other, and the parts are so arranged and operated that the respective engines will turn the rolls in opposite directions.

The rod J passes through an auxiliary steam-cylinder, K, and is attached to the piston thereof, so as to be thrown in'eitherdirection, under control of the roller-man, who stands on the platform L, and operates the valve-lever k of the said engine K with his hand or foot.

The crank-pins g g, piston-rods 71- h, and all other parts of the mill-which are exposed to heavy friction,

are made hollow for the objects hereinhefore set forth,

and, in addition to this, the hollow vertical piston-rods h It being partiallyfilled with cotton or other capillary material, and plentifully supplied with oil, will furnish lubrication for a month for their boxes h h, and the crank-pins g 9, upon which they work.

While describing this invention as used with a vertical piston-rod, I do not limit myself thereto, as the capillary filling will supply the oil to the pin, if the hollow rod be in a horizontal, oblique, or even an inverted position.

The fore plate M, I support without legs in front, in order to avoid any obstruction to the clearing away of scale or other refuse. v 4

For this purpose I employ brackets M M, arranged in pairs, so that the ends of the plate may be introduccd between them, and there held by wedges m.

Screws m are then passed through the upper brackets, to firmly hold the wedges m.

The said fore plate is formed in front with a downward curve, as shown atm, in order to facilitate the passage of the blooms on to and over it, and prevent it making an indentation in the heated metal, or catching splinters or projections thereon, which (in mills as now commonly constructed) cause serious obstruction and difficulty in introducing the metal to the rolls.

Both of these improvements are of course to be applied to the rear plates also, in mills where rear plates are used.

N N represent adjustable hollow mandrels, fitted with diaphragins it, around whioh water is caused to pass from end to end within said mandrels, to keep them cool.

For rolling. hollow articles,'-such as tubular raus, or

beams, or pipes, for any purpose, I employ hollow ingot-s, of steel or iron, sn'ch as represented in figza, which are drawn and pressed around the mandrels. N by the action of the rolls, and, when rolled to a suiticient length, are drawn oii the mandrels by the backward rotation ofthe rolls.

In many casesit will be expedient to subject the metal to a number of passes back and forth, before withdrawing it from the rolls;

The reversibility of my rolls, thus enables the operator to roll and reroll the metal a number of times with great rapidity. This is a matter of very great importance'in rolling tubular aiticles, owing to the thinness of the metal, and consequent liability to rapid cooling. 7

The casings N, around the mandrels N, serve to support andkeep them to their work, and also to prevent any deflection of the tubes in the act of rolling long tubular articles.

N represents screws, by which the mandrels may be secured and adjusted endwise.

a and n are pipes, for the introduction and discharge of water.

, My mill may be used very advantageously for rolling solid iron, without the mandrels.

The reversibilityenables me to do with a two-high mill,with less time and labor, all that can be done with a three-high mill of ordinary construction. I

I have described my mill as furnished with a pair of "constantly-running engines, either of which may be instantaneously connected or coupled to the rolls, so asv to 'reverse the motion of the latter, when desired.

The practical roller will readily understand that the power of these'engines, though not always exerted in drivingthe central pair of rolls herein described, may

be utilized to run other rolls or machinery necessarily connected with every large rolling-mill.

If, however, it be preferred to use only a single engine, a suitable train of gearing may be used to reverse the rolls at will, and a clutch to stop and start them, as required,without stopping the engine.

The clutch-couplings may be made of disk, or cup, or other suitable form. Their important function is to arrest and reverse the, motion of the rolls, without danger of injury to any of the parts, and as rapidly as the workmen can possibly re-enter the metal.

Another great advantage of the friction-connection is, that, in the event of an unyielding obstruction entering between the rolls, the friction-clutch will slip before any part of the machinery can be injured.

At times, when special power is required, one of the engines may be reversed, so that both'will act in unison to drive the rolls in one and the same direction. For this purpose. the simultaneous closing of both the friction-clutches may be effected by having the rod J in two parts, connected to separate pistons in the engine K, or by elongating it by aslot-connectiom'or in any suitable way. v

Having thus described my invention,

The following is what I claim as new therein, and desire to secure by Letters Patent:

1. The combination of the hollow rolls and frictionalclutching-apparatus, substantially as described.

2. The X-formed torsion coupling-shafts, fitting within the hollow journals of the rolls and pinions, and transmitting motion from one to the other.

3. The combination of a set of rolls with the torsional coupling and the frictional clutching-apparatus, substantially as described.

4. The arrangement, substantially as described, of i the hollow mandrels N N and longitudinal diaphragm with the rolls, by virtue of which water may be passed from the rear to the front end and back again, and discharged-at or near the rear end, for the purpose of keeping the mandrels cool.

5. The fore or rear plate, formed. onits outer edge with a downward curve, m, and arranged'in relation 

